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Unformatted text preview: vement. For example, in edema (pulmonary or systemic) secondary to heart failure, diuretic drugs are given to reduce blood volume and venous pressure. In heart failure patients, improving cardiac output by using cardiostimulatory or vasodilators drugs reduces venous and capillary pressures, thereby decreasing filtration and promoting reabsorption of fluid within tissues (click here to see why increasing cardiac output decreases venous pressure). If a patient suffers from ankle edema, that person will be instructed to keep their feet elevated whenever possible (to diminish the effects of gravity on capillary pressure), use tight fitting elastic hose (to increase tissue 2 Pulmonary Circulation hydrostatic pressure), and possibly be prescribed a diuretic drug to enhance fluid removal by the kidneys. 3 Pulmonary Circulation Physical Factors that Determine Capillary Fluid Exchange
There is a free exchange of water, electrolytes, and small molecules between the intravascular and extravascular compartments of the body. T...
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This note was uploaded on 04/18/2008 for the course PHYS 1010 taught by Professor Thompson during the Fall '07 term at New York Medical College.
- Fall '07
- Hydrostatic Pressure